"A while back, the WordPress development team decided to aim for date-targeted, quarterly releases, to speed up the development cycle. One of the main things this does is to give more frequent updates, but with fewer "big" new features in each release. The target for WordPress 2.2 was set for around April 23...

...But, since these changes [tags] have come about so close to the scheduled release date, the developers have decided to push the release back by "a week or two", according to Matt. I have a feeling that this will definitely be worth it in the long run. The improved tags API and underlying database schema are going to open a lot of interesting doors for plugin developers."

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